>>> tomorrow night on the heels of the one-month anniversary of the massacre at sandy hook, joe biden hands his recommendations on gun violence, i'll host a live one-hour special. "guns in america." i'll be talking to people on both sides, including maryland attorney general beau biden who says military style assault weapons have no place on the streets, his own brother is a casualty of gun violence that says that the victims in newtown are being used by propaganda. the families of the victims of the aurora movie theater massacre. be part of a live audience in my new york city studio. go to my website for details. that's all for us tonight. "ac 360" starts now. >>> piers, thanks. good evening, it's 10:00 in newtown, connecticut. one month ago, tragedy touched down in his idyllic town, forever changing the lives of so many people here. one month later, the crowds, reporters, and law enforcement personnel are gone, but the pain for many families here remain. for the first time in the town hall behind me, family members of 11 victims of the tragedy had a conversation, about health, schoo